Research on living status of Oncomelania hupensis in autumn and winter and its correlates in Eastern Dongting Lake area
10.16250/j.32.1374.2017121
- VernacularTitle:东洞庭湖秋冬季节钉螺生存状态及其影响因素的研究
- Author:
Wan-Ting CHENG
1
;
Xiang PAN
;
Ya YANG
;
Yu YANG
;
Lin-Han LI
;
Zhong HE
;
Bin CAI
;
Wei WAN
;
Jie JIANG
;
Qing-Wu JIANG
;
Yi-Biao ZHOU
Author Information
1. 复旦大学公共卫生学院流行病学教研室、公共卫生安全教育部重点实验室、热带病学研究中心 上海200032
- Keywords:
Oncomelania hupensis;
Ecology;
Time of starting flood;
Average minimum temperature in January;
Dongting Lake
- From:
Chinese Journal of Schistosomiasis Control
2018;30(1):18-21,36
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the dynamic changes of Oncomelania hupensis snail densities in autumn and winter and the relationship between hydrological and meteorological factors and snail growth and decline.Methods From Octobers to De-cembers of 2007 to 2014,a bottomland close to eastern Dongting Lake was selected as the study field.The snails and elevation of the points were surveyed,and the hydrological and meteorological data were collected.The snail densities and death rates of every month were calculated.The meteorological and hydrological data were described,and the relationship between the snail densities and associated factors were fitted by the multiple regression model.Results The snail density was highest in October 2012(41.88 per 0.1 m2)and lowest in November 2008(1.23 per 0.1 m2).The snail mortality was highest in November 2008 (73.72%)and lowest in October 2012(1.09%).The multiple regression model found a linear relationship between hydrological and meteorological factors and snail densities.The correlation coefficient between the prediction of ln(snail density)and its mea-surements by using this model was 0.927(P=0.001).Conclusion The average minimum temperature in January and time of starting flood have an obvious influence on the snail densities in autumn and winter.
